For me, it was my first crystal radio led to an interest in electronics; electronics -> technology; technology -> science in general (hobby level interest) -> c

For me, it was my first crystal radio led to an interest in electronics; electronics -> technology; technology -> science in general (hobby level interest) -> computers / computer sciences (starting with Apple ][ / Commodore / Atari days when 64K was a lot of memory, on through Windows, MacOS, Unix and Linux PCs). From there, the "sky's the limit" as computers can be a useful, educational, and entertaining tool for very nearly any career / hobby these days.